TLS Online TPP Program

#Question id: 12315


In the evolution of whelk- eating behavior in crows, which of the following did natural selection minimize? 

#Unit 10. Ecological Principles
  1. The average number of drops required to break the shell
  2. The average height a bird flew to drop a shell
  3. The average total energy used to break shells
  4. The average size of the shells dropped by the birds
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TLS Online TPP Program

#Question id: 9616

#Unit 9. Diversity of Life Forms

Which mutation should least require realignment of homologous regions of a gene that is common to several related species?

TLS Online TPP Program

#Question id: 9618

#Unit 9. Diversity of Life Forms

Generally, within a lineage, the largest number of shared derived characters should be found among two organisms that are members of the same

TLS Online TPP Program

#Question id: 10324

#Unit 9. Diversity of Life Forms

Which of the following is not true of all horizontally oriented phylogenetic trees, where time advances to the right?

TLS Online TPP Program

#Question id: 11163

#Unit 9. Diversity of Life Forms

The reason that paralogous genes can diverge from each other within the same gene pool, whereas orthologous genes diverge only after gene pools are isolated from each other, is that

TLS Online TPP Program

#Question id: 11162

#Unit 9. Diversity of Life Forms

Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

TLS Online TPP Program

#Question id: 11161

#Unit 9. Diversity of Life Forms

The lakes of northern Minnesota are home to many similar species of damselflies of the genus Enallagma that have apparently undergone speciation from ancestral stock since the last glacial retreat about 10,000 years ago. Sequencing which of the following would probably be most useful in sorting out evolutionary relationships among these closely related species?